extension UIDevice {

var modelName: String {
    var systemInfo = utsname()
    uname(&systemInfo)
    let machineMirror = Mirror(reflecting: systemInfo.machine)
    let identifier = machineMirror.children.reduce("") { identifier, element in
        guard let value = element.value as? Int8, value != 0 else { return identifier }
        return identifier + String(UnicodeScalar(UInt8(value)))
    }
    
    switch identifier {
    case "iPod1,1":  return "iPod Touch 1"
    case "iPod2,1":  return "iPod Touch 2"
    case "iPod3,1":  return "iPod Touch 3"
    case "iPod4,1":  return "iPod Touch 4"
    case "iPod5,1":  return "iPod Touch 5" // (Gen)
    case "iPod7,1":  return "iPod Touch 6"
        
    case "iPhone3,1", "iPhone3,2", "iPhone3,3":  return "iPhone 4"
    case "iPhone4,1":  return "iPhone 4s"
    case "iPhone5,1":  return "iPhone 5"
    case "iPhone5,2":  return "iPhone 5" // (GSM+CDMA)
    case "iPhone5,3":  return "iPhone 5c" // (GSM)
    case "iPhone5,4":  return "iPhone 5c" // (GSM+CDMA)
    case "iPhone6,1":  return "iPhone 5s" // (GSM)
    case "iPhone6,2":  return "iPhone 5s" // (GSM+CDMA)
    case "iPhone7,2":  return "iPhone 6"
    case "iPhone7,1":  return "iPhone 6 Plus"
    case "iPhone8,1":  return "iPhone 6s"
    case "iPhone8,2":  return "iPhone 6s Plus"
    case "iPhone8,4":  return "iPhone SE"
    case "iPhone9,1":  return "iPhone 7"
    case "iPhone9,2":  return "iPhone 7 Plus"
    case "iPhone9,3":  return "iPhone 7"
    case "iPhone9,4":  return "iPhone 7 Plus"
    case "iPhone10,1","iPhone10,4":  return "iPhone 8"
    case "iPhone10,2","iPhone10,5":  return "iPhone 8 Plus"
    case "iPhone10,3","iPhone10,6":  return "iPhone X"
    case "iPhone11,2":  return "iPhone XS"
    case "iPhone11,4","iPhone11,6":  return"iPhone XS Max"
    case "iPhone11,8":  return "iPhone XR"
        
    case "iPad1,1":  return "iPad"
    case "iPad1,2":  return "iPad 3G"
    case "iPad2,1", "iPad2,2", "iPad2,3", "iPad2,4":  return "iPad 2"
    case "iPad2,5", "iPad2,6", "iPad2,7":  return "iPad Mini"
    case "iPad3,1", "iPad3,2", "iPad3,3":  return "iPad 3"
    case "iPad3,4", "iPad3,5", "iPad3,6":  return "iPad 4"
    case "iPad4,1", "iPad4,2", "iPad4,3":  return "iPad Air"
    case "iPad4,4", "iPad4,5", "iPad4,6":  return "iPad Mini 2"
    case "iPad4,7", "iPad4,8", "iPad4,9":  return "iPad Mini 3"
    case "iPad5,1", "iPad5,2":  return "iPad Mini 4"
    case "iPad5,3", "iPad5,4":  return "iPad Air 2"
    case "iPad6,3", "iPad6,4":  return "iPad Pro 9.7"
    case "iPad6,7", "iPad6,8":  return "iPad Pro 12.9"
    case "AppleTV2,1":  return "Apple TV 2"
    case "AppleTV3,1","AppleTV3,2":  return "Apple TV 3"
    case "AppleTV5,3":  return "Apple TV 4"
    case "i386", "x86_64":  return "Simulator"
    default:  return identifier
    }
}
}

final class EDevice {

enum UIType {
    case less5S
    case normal
    case x
    case unown
}

class func getIphoneType() -> UIType {
    let str = UIDevice.current.modelName
    switch str {
    case "iPhone 5", "iPhone 5c", "iPhone 5s":
        return .less5S
    case "iPhone X", "iPhone XS", "iPhone XS Max", "iPhone XR":
        return .x
    case "Simulator":
        if UIScreen.main.bounds.height >= 812 {
            return .x
        }
        return .normal
    default:
        return .normal
    }
}

class func getCurrentVersion() -> String { // 登录需要使用
    if let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String {
        return version
    }
    return ""
}

/**
 
 *此uuid在相同的一个程序里面-相同的vindor-相同的设备下是不会改变的
 
 *此uuid是唯一的，但应用删除再重新安装后会变化，采取的措施是：只获取一次保存在钥匙串中，之后就从钥匙串中获取
 
 **/
class func getUUID() -> String {
    if let uuid = UIDevice.current.identifierForVendor?.uuidString {
        return uuid
    }
    return ""
}
}